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CVE-2019-0564 — Denial of service in...

HIGH

Denial of service in ASP.NET Core

Published May 14, 2022Updated December 5, 2024Source: osv

Summary

A denial of service vulnerability exists when ASP.NET Core improperly handles web requests, aka "ASP.NET Core Denial of Service Vulnerability." This affects ASP.NET Core 2.1. This CVE ID is unique from CVE-2019-0548.

Advisory Timeline

  • First published May 14, 2022 (1612 days ago).
  • Last revised December 5, 2024 — 936 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

NuGet
Update Microsoft.AspNetCore.WebSockets to 2.2.1 or later
dotnet add package Microsoft.AspNetCore.WebSockets --version 2.2.1
NuGet
Update Microsoft.AspNetCore.WebSockets to 2.1.7 or later
dotnet add package Microsoft.AspNetCore.WebSockets --version 2.1.7
NuGet
Update Microsoft.NETCore.App to 2.2.1 or later
dotnet add package Microsoft.NETCore.App --version 2.2.1
NuGet
Update Microsoft.AspNetCore.All to 2.1.7 or later
dotnet add package Microsoft.AspNetCore.All --version 2.1.7
NuGet
Update Microsoft.AspNetCore.Server.Kestrel.Core to 2.1.7 or later
dotnet add package Microsoft.AspNetCore.Server.Kestrel.Core --version 2.1.7
NuGet
Update Microsoft.AspNetCore.App to 2.2.1 or later
dotnet add package Microsoft.AspNetCore.App --version 2.2.1
NuGet
Update Microsoft.AspNetCore.All to 2.2.1 or later
dotnet add package Microsoft.AspNetCore.All --version 2.2.1
NuGet
Update Microsoft.NETCore.App to 2.1.7 or later
dotnet add package Microsoft.NETCore.App --version 2.1.7
NuGet
Update System.Net.WebSockets.WebSocketProtocol to 4.5.3 or later
dotnet add package System.Net.WebSockets.WebSocketProtocol --version 4.5.3
NuGet
Update Microsoft.AspNetCore.App to 2.1.7 or later
dotnet add package Microsoft.AspNetCore.App --version 2.1.7

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (10)

Affects 1 ecosystem: nuget (6).

PackageEcosystemAffectedFixed In
Microsoft.AspNetCore.WebSockets
nuget
2.2.02.2.1
Microsoft.AspNetCore.WebSockets
nuget
2.1.0, 2.1.12.1.7
Microsoft.NETCore.App
nuget
2.2.02.2.1
Microsoft.AspNetCore.All
nuget
2.1.0, 2.1.1, 2.1.2, 2.1.3 (+3 more)2.1.7
Microsoft.AspNetCore.Server.Kestrel.Core
nuget
2.1.0, 2.1.1, 2.1.2, 2.1.32.1.7
Microsoft.AspNetCore.App
nuget
2.2.02.2.1
Microsoft.AspNetCore.All
nuget
2.2.02.2.1
Microsoft.NETCore.App
nuget
2.1.0, 2.1.1, 2.1.2, 2.1.3 (+3 more)2.1.7
System.Net.WebSockets.WebSocketProtocol
nuget
4.5.0, 4.5.1, 4.5.24.5.3
Microsoft.AspNetCore.App
nuget
2.1.0, 2.1.1, 2.1.2, 2.1.3 (+3 more)2.1.7

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 7.5 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References

Frequently Asked Questions

What is CVE-2019-0564?
Denial of service in ASP.NET Core This vulnerability has been assigned a severity rating of HIGH (CVSS score: 7.5/10).
How do I check if my project is affected by CVE-2019-0564?
CVE-2019-0564 affects Microsoft.AspNetCore.WebSockets, Microsoft.NETCore.App and Microsoft.AspNetCore.All (and 3 more). Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2019-0564 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
7.5

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-6px8-22w5-w334

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